docs: def uninstall_hook(ctx):
      """ Uninstall gitlint commit-msg hook. """
      try:
          lint_config = ctx.obj[0]
          hooks.GitHookInstaller.uninstall_commit_msg_hook(lint_config)
          # declare victory :-)
          hook_path = hooks.GitHookInstaller.commit_msg_hook_path(lint_config)
          click.echo(u"Successfully uninstalled gitlint commit-msg hook from {0}".format(hook_path))
          ctx.exit(0)
      except hooks.GitHookInstallerError as e:
          click.echo(ustr(e), err=True)
          ctx.exit(GIT_CONTEXT_ERROR_CODE)